Rear element of a shoe upper



FIG. 1 is a perspective view of an rear element of a shoe upper showing the new design;

FIG. 2 is a side elevational view thereof; and,

FIG. 3 is a rear elevational view thereof.

The uneven broken lines in all figures showing the remainder of the shoe are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a rear element of a shoe upper, as shown and described. 